Eight of the 46 highly-anticipated UFO videos Congress has demanded be made public by the Department of War are featured in an upcoming documentary, including a color video of a flying sphere shared publicly for the first time with The Post. The footage is revealed in investigative journalist Jeremy Corbell’s film “Sleeping Dog,” out Tuesday. “Congress has formally requested these files by name. The American people have a right to know — and more than that, a need to know,” said Corbell, who